<template>
    <div class="list" ref="wrapper">
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper">
                        <div class="button">
                            {{this.$store.state.city}}
                        </div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper" v-for="item of hotCities" :key="item.id" @click="handleClickCity(item.name)">
                        <div class="button">
                            {{item.name}}
                        </div>
                    </div>
                </div>
            </div>
            <div class="area" v-for="(item, key) of cities" :ref="key" :key="key">
                <div class="title border-topbottom">{{key}}</div>
                <div class="item-list" v-for="innerItem of item" :key="innerItem.id" @click="handleClickCity(innerItem.name)">
                    <div class="item border-bottom">{{innerItem.name}}</div>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
    import Bscroll from 'better-scroll'
    import { mapState } from 'vuex'
    import { mapMutations } from 'vuex'
    export default {
        name: 'CityList',
        props: {
            cities: Object,
            hotCities: Array,
            letter: String
        },
        methods: {
            handleClickCity(city){
                this.changeCity(city)
                this.$router.push('/')
            },
            ...mapMutations(['changeCity'])
        },
        mounted(){
            this.scroll = new Bscroll(this.$refs.wrapper,{
                click: true
            })
        },
        watch: {
            letter(){
                if(this.letter){
                    const element = this.$refs[this.letter][0]
                    this.scroll.scrollToElement(element)
                }
            }
        },computed: {
            ...mapState(['city']),

        }
    }
</script>

<style scoped lang='stylus'>

    @import '../../../assets/styles/varibles.styl'
    .border-topbottom
        &:before
            border-color #cccccc
        &:after
            border-color #cccccc

    .border-topbottom
        &:before
            border-color #cccccc
    .list
        position absolute
        top 1.58rem
        bottom 0
        left 0
        right 0
        width 100%
        overflow hidden
        .title
            line-height .54rem
            background  #eee
            padding-left .2rem
            font-size .26rem
            color #666
        .button-list
            padding .1rem .6rem .1rem .1rem
            overflow hidden
            .button-wrapper
                float left
                width 33%
                .button
                    margin .1rem
                    text-align center
                    border .02rem solid #ccc
                    padding .1rem
                    border-radius .06rem
        .item-list
            line-height .76rem
            padding .2rem
    
</style>